Title:
EXTERNAL SURFACE SPRAY COATED PIPE
Document Type and Number:
Japanese Patent JP2014181349
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To further improve corrosion resistance of an external surface spray coated pipe which is made of cast iron or steel and has a corrosion preventive layer of Zn-Al pseudo alloy on an external surface.SOLUTION: A corrosion preventive layer formed on an external surface of a pipe by metal spray coating is made of a pseudo alloy layer which is a mixture of a zinc layer and an aluminum alloy layer containing magnesium and silicon. This lowers the potential of an external surface spray coated pipe in a corrosive environment compared to one having a conventional corrosion preventive layer of which aluminum alloy forming the pseudo alloy layer does not contain magnesium. As a result, a sacrificial anode effect is increased to increase corrosion resistance of the pipe, extending corrosion-resistant life.
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Inventors:
YAMADA YOSHINOBU
NAKAMOTO KOJI
DEGUCHI TAKAAKI
NAGASAWA DAISUKE
ENDO MASANORI
KANEKO AKIRA
NAKAMOTO KOJI
DEGUCHI TAKAAKI
NAGASAWA DAISUKE
ENDO MASANORI
KANEKO AKIRA
Application Number:
JP2013054672A
Publication Date:
September 29, 2014
Filing Date:
March 18, 2013
Export Citation:
Assignee:
KURIMOTO LTD
NIPPON LIGHT METAL CO
NIPPON LIGHT METAL CO
International Classes:
C23C4/08
Attorney, Agent or Firm:
Bunji Kamata
Naoya Kamata
Yaichiro Nakatani
Masahiro Too
Takayoshi Tagawa
Naoya Kamata
Yaichiro Nakatani
Masahiro Too
Takayoshi Tagawa